Door stop



Feb. 22, 1938. 0. E. CARLSON 2,109,127

DOOR STOP Filed June 8, 1957 Mmm 'I Y 19 6/4] 96 51g c 27 26 30 .l 20

Patented Feb. 22V, 1938 UNITEDr STATES PATENTY OFFICE DOOR STOP Otto E.Carlson, Vernonia, Oreg. Application .lune 8, 1937, Serial No. 147,125

2 Claims` (Cl. 292-69) This invention aims to 'provide a novel structurewhich may be used either to hold a door in a partially opened position,or bevemployed as a yieldable check or bumper which, when horizontallydisposed, will engage the wall or base-board of a room and limit theopening movement of the door without marring the base-board or wall.

It is within the province of the disclosure to improve generally and toenhance the utility of l0 devices of that type to which the presentinvention appertains.

With the above and other objects in view, which will appear as thedescription proceeds, the invention resides in the combination andarrangement of parts and in the details of construction hereinafterdescribed and claimed, it being understood that changes in the preciseembodiment of the invention herein disclosed, may be made within thescope of what is claimed, without departing from the spirit of theinvention.

1n the accompanying drawing:

Fig. 1 shows in elevation, a device constructed in accordance with theinvention; Fig. 2 is a vertical longitudinal section;

Fig. 3 is a vertical longitudinal section showing the device as it willappear when it is used as a wall-engaging check or bumper;

Fig. 4 is a transverse section on the line 4-4 of Fig. 2;

Fig. 5 is an elevation of the back plate of the casing.

The numeral I marks a horizontally swinging barrier, such as a door. Thefloor is shown at 2.

The device forming the subject matter of this application preferably ismade of metal, saving as hereinafter specied, and includes a support orcasing, embodying a back plate 3. The back plate 3 has holes 4 near itsupper and lower ends. Near its upper end, and adjacent to itslongitudinal edges, the back plate 3 has slots 6.

'Ihe body of the casing is marked as a whole by the numeral 1. Itincludes parallel side walls 8, connected by a top plate 9 and a frontplate IU. The front plate I0 is shorter than the side walls 8, and thecasing, therefore, is open at the front, throughout a major portion ofits height, as shown at I2, the casing being open at its bottom also, asshown at I4. The lower end of the frontl plate IIl is formed into anoutwardly projecting stop Tongues |5 project from the side walls 8 andfrom the top plate 9 of the body 1 of the casing. The tongues|5 areextended through the slots 6 and are clinched down on the back plate 3,to hold the body 1 of the casing assembled with the back plate 3.Securing elements |6 are mounted in the holes 4 of the back plate 3, tohold the casing on the doorV I, in a vertical position.

The numeral |1 marks a tubular lever of such Width as to be receivedbetween the side walls 8 5 of the casing. Intermediate its ends, andnear its upper end, the tubular lever |1 is fulcrumed at |8 on the sidewalls 8 of the casing. The upper end ofthe tubular lever |1 is providedwith upstanding ears I9. The ears I9 carry Va trans- 10 verse pivotmember 20. On the .pivot member 20 is mounted a shouldered stud 2|carrying a washer 22. The upper end of the stud 2| is received in thelower end of a compression spring 23, and the lower end of thecompression spring 23 en- 15 gages the washer 22. The upper end of thecompression spring 23 is carried by a downwardly extended and outwardlyinclined nger 24 mounted on the back plate 3, near to the top plate 9 ofthe casing. 20

A plunger 25 is mounted for reciprocation in the tubular lever I1. Theplunger 25 includes a head 26 tting closely but slidably in the tubularlever I1. The head 26 has a depending projection 21. Into the projection21 is threaded the -re- 25 duced end 28 of a stem 29. The stem 29 slidesin the lower end wall of the tubular lever I1. A compression spring 3|]is located in the tubular lever I1. The upper end of the compressionspring 30 abuts against the upper end of the 30 tubular lever I1. Thelower end of the compression spring 30 abuts against the head 26 of theplunger 25. A resilient foot 3|, preferably made of rubber, is securedto the lower end of the plunger stem 29, externally of the tubular leverI1. 35 The foot 3| preferably is a portion of a sphere and presents awedge shaped edge 32 to the lower edge of the door I, undercircumstances which will be pointed out hereinafter.

Assume that the parts are in the positions 40 shown in Fig. 3. Then thecompression spring 23 has tilted the tubular lever |1 on its fulcrum I8until the lever rests against the stop II on the casing, in a horizontalposition. The compression spring 30 has advanced the plunger 25 45 untilthe shoulder afforded by the outer end of the projection 21 has engagedthe outer end wall of the lever |1. The resilient foot 3| is sopositioned that, when the door is opened, the foot will engage the wallor base-board (not shown) and 50 stop the opening movement ofthe door.Because the foot 3| is made of resilient material, such as rubber, andbecause the spring 30 affords a yieldable backing for the plunger 25,the door may be opened fully, and the part 3| may come 55 into contactwith the wall or base-board, without marring either of those parts.

Suppose that the operator wishes to stop the door I in a partiallyopened position. He then places his foot on the part 3| and swings thelever II downwardly on its fulcrum I8 until the part 3| engages the oor2, the door I being swung open until the wedge shaped part 32 of thefoot is engaged underneath the door I, as shown in Fig. 2. It will thenbe practically impossible to open the door further, without applying asuiiicient force to break some part of the device forming the subjectmatter of this application. When the parts have reached the position ofFig. 2, the pivot member 20 is directly above the fulcrum I8 of thelever I'I, and the spring 23 will have no tendency to swing the leverI'I up into the position of Fig. 3. The operator, however, can close thedoor a little, in the direction of the arrow A in Fig. 2 and thisoperation Will shift the pivot member 20 lto rthe right in Fig. 2, withrespect to the fulcrum I8 of the lever I1, so that the spring 23 willbecome effective to tilt the lever and raise it into the horizontalposition of Fig. 3.

The device forming the subject matter of this application is simple inconstruction, but will be found thoroughly effective for the ends inview. The structure has a. double function, in that it may be used, asin Fig. 2, to stop a door in a partially opened position, and in that itmay be used in the position of Fig. 3 to serve as a yieldable,wall-engaging bumper, when the door is opened fully.

Having thus described the invention, what is claimed is:

1. In a device of the class described, a casing having a stop, a leverfulcrumed intermediate its ends on the casing, a plunger slidable on thelever, a foot on the lower end of the plunger and shaped to be engagedbeneath a door, spring means for moving the plunger outwardly withrespect to the lever, and spring means assembled with the casing andwith the upper end of the lever for swinging the lever and the plungerupwardly into an approximately horizontal position, in engagement withthe stop.

2. In a device of the class described, a casing having a stop, a tubularlever fulcrumed intermediate its ends on the casing, a plunger slidablein the lever, a foot on the lower end of the plunger andY shaped to be`engaged beneath a door, a compression spring interposed between theupper end of the plunger and the upper end of the lever, and acompression spring extended between the upper `end ofthe lever and theupper portion of the casing, the last specied spring constituting meansfor swinging the lever upwardly into engagement with the stop when thefoot is disengaged from beneath a door.

O'IIO E. CARLSON.

